Rosland Smog has been Hahn Automotive's go to smog shop for years! They are the best in service and not a hassle at all!

The service was excellent in every way!!! Great customer service, quick, and very personable owner. I will recommend Roseland Smog to anyone who needs a car smogged. You will be grateful to have found this one!!! 930 Petaluma Hill Road, Santa Rosa. read more

Roseland Smog was recommended to me by my mechanics @ AAA.. They haven't steered me wrong.. So I made my way there, Jeff was many things.. Knowledgeable, Kind, and full of important information.. that I hadn't been aware of.. Never talked down or dismissed a question I had just answered straight with his many years of knowledge.. I thank him for that.. I will be back. ;) Thank you Jeff read more

I needed my old Mercedes station wagon smogged after registering online DMV. Super great people Lori and her husband as I had a morning appointment. I pulled up and parked out front making it really easy. After some fun conversation about family dogs & cats my car was finished in about 20 minutes. I really appreciate the service, price and ability to support small family owned local business. Excellent customer service all around. read more

Brough my huge class A motorhome here for a smog... was in and out in a snap.. couldn't have been easier and I appreciate the husband and wife team. Thank you so much read more

Friendly customer service over the phone and in person! Quick and efficient. Highly recommend!

My normal smog stop was closed despite business hours listing otherwise, I stopped into Roseland Smog because it was actually open on a Saturday! Clean, warm, friendly - this will be my new go - to smog shop! I couldn't ask for better service and faster smog. No need to continue looking through reviews! read more

My entire family with at least 12 cars goes here for their smog tests. Geoffrey (Jeff) and his wife are super nice people that get you in and out. We've never had a problem getting our cars passed. Once we had a fail because the engine light was on, but Jeff told us what was wrong and we were able to fix it. Their prices have remained $59 forever, so the price is good, the owners couldn't be nicer, and you're in and out right away. If your car needs a smog check, I highly recommend them! read more

These guys are great. Reliable year after year. No nonsense, just get 'er done. Killer vintage car posters in the waiting room too!

Friendly, professional, and fast -- I was in and out in less than 15 minutes! He also let me know about a recall on my car's airbag and gave me a printout with all the information. I'll definitely be going back! read more

Great place - coming here for years. Wonderful service, straight up folks. Reliable, honest and they know what they're doing. Do t go anywhere else. read more

First I went to the Cheap Smog store down the street, but they were closed (despite their hours saying they were open) so I turned around and drove up to Roseland Smog, and am I glad I did! Lovely man who owned the shop took immediate and gracious care of me. The price was very good and he was quick and kind. So glad I went here. read more

Always quick and easy! I haven't used another shop for my car in years and wouldn't dream of it, Roseland smog is absolutely the best smog shop locally. read more

Fast, efficient, professional and a very fair price. Nice family owned business that's been around for decades.

I've been here many times over the past 6+ years. This is my go to smog shop! They are fast, friendly, and affordable! On my most recent visit I called ahead to see if they could take me in, because it was a Saturday and I usually try to go on week days because I figure it's a less busy time. The lady on the phone told me they are 1st come 1st serve / no appointments. And that they would be open til 2pm. I headed right down there, and got there literally right before 3 other people! I was very happy with my impeccable timing. My truck was done in 15min. I've had nothing but GREAT experiences all 4 or 5 times I've been here!!! I highly recommend this smog shop!!!!! read more

Friendly wife and husband hard working honest owners. Highly recommend!!! CALL FOR APPOINTMENT they are honest and true to clients. Quick and cost effective!! read more

Always a great experience at Roseland. I used to live in Santa Rosa and went there every time. Now I live in Los Gatos and despise smogging in South Bay... I drive up to Santa Rosa when it's that time just to go to Roseland. read more

The Man that performed my smog test was very kind and he did his job very quick, I was in and out of there within 15 minutes. Would highly recommend read more

Jeff and Lori are really the best. Kind and honest and trustworthy, they have helped my car half a dozen times. Efficient, too. I agree with others that Roseland Smog is the best around here. Super good prices! read more

I have driven the same truck for 42 years. No shop will do these anymore as it takes 4 times as long. I paid my registration and tried shops for 2 months. Jeff at Roseland Smog did it that same day I called. These days it seems so rare to find help and someone with values that include caring. So thankful and my Truck-Truck is back on the road. read more

Excellent service and timing. Had a 9:30 appointment, Lori immediately checked us in and 20-minutes later we were out. Lori was super personable and Jeff was super quick, what a team! read more

Snobby and rude. Turned me away because I didn't have an appointment. Two workers and no customers in the shop, which I thought was odd. I would not have minded waiting. This was at about 10am. Totally bizarre experience. read more

All the glowing reviews are true....Roseland Smog is the very best. I've gone in for two smogs now and both appointments were wonderful. I was in and out today in about 20 minutes. The owners are so kind and personable. I'll never go anywhere else! read more

I called to make an appointment for the next day. Arrived 5 minutes early. Smog was completed and I was out the door in 17 minutes flat. Best automobile smog test station I've used in 40 years! Highest recommendation. read more

Another fan favourite for me! I called this morning and was able to get in for an appointment. I arrived on time and was in and out in less than 30 minutes. Quick, friendly, clean (for a shop) and cheap. No problems, passed smog and all was delivered with a smile. read more

It was 60.75 for a smog check, 8.25 for certificate on a diesel truck. Price was listed up front and that's what they charged. Was able to book an appointment came in 5 minutes late but they still finished up on time. Good by the book perfunctory service! read more

I first went there years ago when I was rejected by other- cheap place down the street that didn't want to do a Van (that took a little bit more work to do). Cost was the same here as there. The only difference is Jeff and he's quite a finds. Talk about nice people. All 3 of my vehicles come here. He given me good advice on how to deal with those engine lights. If you don't know the trick You will be coming back again and again and failing because you didn't drive it long enough at the right speed. Yes you have to get an appointment because some days he can be booked but he's worth it. read more

You make an appointment and your time is available when you get that, no waiting around. Spotless waiting area and besides great magazines, they have very cool car ads from 60'-70s magazines framed and hung on the walls. By the time you read three of four of them, your car is finished. Highly recommend, we've been using them since we moved here 5 years ago. read more

Went here based on Yelp reviews. Thanks guys! Walked in and was greeted by a cool older guy. Said someone else was late, since I was on time- he'd put my car on first. Sweet! In and out in 20 minutes. For real. Less than $60 out the door. For an SUV to boot. And it passed. Gotta love that! There's a pretty cool woman who runs the office and an AWESOME dog to hang and chat with while you wait. Coffee, cool mags & local nostalgia to browse, this Mom & Pop type place is now my go to. Highly recommended! read more

I can't say enough good things about this shop. This guy is an honest down to earth person that I deeply appreciate going to for my SMOG. I also absolutely adore the woman who is working with him. I was recommended to this shop by Pete's and I can't thank them enough for pointing me in the right direction. I will continue going here for my SMOG and I highly recommend this shop to everyone. He wants you to pass as much as you want to pass. Thank you Roseland Smog! Enjoy the holidays, you deserve it! read more

Took my Mustang to them because it had to go to a test only station. They were recommended by another smog shop. Left my car for an hour like they said. When I returned they said they couldn't smog my car due to a massive EVAP leak. I left and returned to my normal smog shop and he tested the EVAP 3 times and it passed every time. There are 2 hoses on the charcoal canister the small hose goes back to the tank and allows the EVAP machine to properly test the fuel tank. The second bigger hose vents the fuel tank out the charcoal canister vents and fill the shop up with gas fumes. You could clearly see where the smog tech at Roseland Smog put his vise grips on the wrong hose and failed the test. I called them back when I found this out at the smog shop I normally use to see if I could bring it back to get it re tested and lady who answers the phone became very rude and combative because I told them that it looked like a mistake was made on the hose that was clamped for the test. I asked her to talk to the smog tech and she very rudely put me on hold. When she came back on the line she told me that her tech said he did it right and to take my care somewhere else and that the shop I normally use EVAP machine was wrong. My normal smog shop said take it across the street they are a test only shop. I drove across the street and he smoged my Mustang without an issue. It cost me the sale of the car due the the rudeness and not knowing how to properly test the EVAP system. I will never do business with them again and I will tell everyone what a terrible shop they are. I also am going to file a complaint with the BAR. read more

If you live in Sonoma County, it is no longer necessary to dread going for a smog check. Having your car registration arrive with the indication that a smog check is required has always been accompanied by a sinking feeling. Past experiences included waiting long past your appointment time, trying to find a shady place to wait, or sitting in an open waiting room that included the smells of racing car engines and oil. Not anymore! Roseland Smog is owned by the nicest of people. The waiting room is clean, with magazines to read and water to drink. This was my second visit to Roseland Smog and I had the same positive experience. My car was taken exactly at my appointment time and the promised 20 minute experience was right on the button. Only the fun of talking to the great couple that own the place kept me from leaving in 20 minutes. Oh yes, and $59 for the check was fair and reasonable. I'll be back again! read more

These guys are great! Hardly ever a wait, very reasonable price and really nice folks. This is my go-to smog place for all my vehicles. The first few times going was a little challenging because you have to make a little u-turn after turning onto Petaluma Hill Rd from SR Ave. But it's not that big a deal and worth it. Plus they're right next door to Bill's Auto Repair and Bill is an excellent mechanic! read more

Roseland Smog is an awesome smog shop. I have brought my vehicles for years without an appointment and was out of there in 20 minutes each time. Jeff and his wife are very nice folks. Had good conversations with both of them. A must go shop when you need a smog. read more

This is my go to for years now. Always the same timely, efficient service with a reliable competitive price. And advice on making sure your passes the first time, especially if driven infrequently. And.. I always seem to meet someone nice in the waiting room, socially distanced of course this time! read more

This is my second visit to Roseland Smog. I made my appointment, and arrived with a couple of minutes to spare. They collected the necessary info from me, then immediately took my car into the shop for the test. I was on my way home after about 15 minutes. I was impressed. They were friendly, and had a great sense of humor when I started to leave without paying! I had just become so wrapped up in our conversation that I forgot that small detail. But they handled it kindly! I'll go back. read more

Put my car through smog knowingly it wouldn't pass because the check engine light was on. Went back to retest it and he refused because I mentioned another smog shop. Grumpy man. read more

I was in and out in less than 15 minutes. The worker was very friendly and efficient. I paid less for a test and certificate than other places are advertising with coupons. read more

A rare business combination these days friendly, competent, reasonably priced. In and out in 20 minutes, maybe I got luck but "I'll be back". Real people! Check'em out! Kevin read more

I was impressed with the Covid-19 precautions at Roseland Smog. The staff were friendly, professional, and the service was quick. I will definitely keep using Roseland Smog, now that I've found them. read more